Starting and lighting system.



` J. B. ENTZ.

STARTING AND LIGHTING SYSTEM.

APPUCATION FILEB APR. 20. 1912.

latented Sept. 11, 191?Q .Vehicles lighting, or starting` and JUSTUS B.ENTZ, OF CLEVEND, HIO, .':SSIGNGB TO EDWIN L. THURS'I'ON, TRUSTEE, OFCLEVELAND, OHIO.

STARING AND LGHTING SYSTEM.

Application file. April 20, 1812.

To all 'whom t 'may Gomera:

Be it known that Jus'rus l. lilx'rx, a citizen of the United States,residinp; at Cleveland, in the county of (luyahoga and State of Ohio,have invented a certain new and useful. lmprovement in fitartinn; andLighting Systems7 of which the :followingr is a full, clear7 and eXactdescription. This invention relatcs to li ;'htin g, ing and lightingsystems adaptcd larly for engine driven Vehicles.

There are in use at the present or startparticutime on lighting systemshaving a dynamo electric machine which is intended to be geared orconnected to the engine of the vehicle and is provided withdifferentially wound field windings including a main shunt winding Vtorproduriim` a field of Constant- 'polarity and a series Winding. When themachine is rvingz' as a generator, the series field opi'ioses lhe shuntfield so as to govern the current output and hence the potential of the'generator7 causes the potential to ren'iain suhslzanl Constant atvarying sgceds. ll? he system is used for starting,` as well` asliefhring and battery charging purposes, when the machine is serving` asa motor the series iield assists the shunt field so to cause the motorto have strong,` torque, and in tact, the desirable characteristics ota. starting' n'uao'r.

A starting` and lighting system of this type which has been used to someextent, includes a. controllini;I switvh having means fordisclonneetinf; the shunt lield Winding` when the circuit of Jdiebattery and dynamo electric machine is (mened by opening thecontrolling` switch. 'l`his feature has the important advantage ofprerentinnj the voltage of the generator building' up and burning outthe shunt windinnf when the machine is being` driren by the engine onopen circuit or when the iollan'e and current `g'overning means ismactive. w

By'the provision of means `for disconnecting,r one side or terminal el'the shunt lield winding when the controlling: switch is opened, there isliability oi" barman' out the shunt fielol windingz if: the generatorand battery Circuit are always epeuciil at the switch. In case. however,the eirenit should Jam a re' .nami c lllatenied Sept. 1131.,

Serial No. 692,160.

be opened at sonic point other than at the switch7 as might be the casei i'A a eonductor in sonic part of the circuit should be broken, or itthe circuit should be opened by the brealiage or loosening o'll one ofthe battery connerlions, the machine would then be opcrated by theengine as an open eirruit machine, and inasmueh as the switch would thenbe closed, the shunt winding would be connected to both terminals of themachine, and the Voltage might build up and cause the winding to beburned out.

rl`he present invention has for its .obje.',t the. prorision of asa'lfety iiiature in a lighting` or starting and lighting system of thegeneral type above brielly explained, said feature being` in the form ofan automatic culout which will disronnect the shunt windin; from one'otIthe terminals olz the machine, in case the baltery and generator eir-('uit is accidentally opened at a. JLime when the switch is closed7 andthe machine is in opei'ation. Vll`urther, the invention aims lo providemeans \\'hereb`\j not only will the slnmt lield windingbe opened7 butthe lighting cirruit will also be opened on the occurrenrc ot thebrealmgc or acridental openinfgj o'lI the generator and battery rirruit.

ll'ly 'invention may be brielly sunnnar'ized as consisting 'in certainnovel` rombinations and arrangcmenl's of parts which will be describedin the specilication and sel l'orth in lhe appendml rlaims.

Cl`he single ligure el the drawing` shows r|iagranunatieally a startingand lighliug system equipped with my inventiou.

ll 'l"e.i'i'iiif' now to the drawinif, Vl(l represenls l'he armature ofthe dynamo electric i'nachine which is permanently connected to thecrunk sha'lft ll of Jdie internal ccmbustion engine by a powertransmitting agency 12 which 'for -convenicnre oil 'illustration isshown in the form of a pair ot gears. rl`he dynamo electric machine isprovided with a shunt lield winding 13 l'or producing a licld ofconstaut polarity and a. series lield windinfJ 'l-l through whirh lhedireetion of current is revei'sed when the machine is changed vlfroni amotor to a` generator, this field havingr` a n'iag'netizing` action whenthe machine is servin' as a motor and demagnetizing action when themachine is serving as a. generator. 'llhis e'ives the motor a strong`l'ield'and good torque tor turning over the engine, and in.- asmuch asthe 'tlemagnetizing` action varies with the speed of the machine when itis servinej as a generator, the generator voltage is substantiallyeonstant. When the machine is serving as a motor, current is suppliedthereto 'trom a storage battery 15, and when the machine is serving,` asa generator, the latter supplies currei'rt to the battery for chargingpurposes, or to a lamp circuit 1(3 'for lighfiing purposes, or to bothsimultaneously. Vlllhe conductors ,l'i and 18 ot the lamp circuit areconnected to conductors 11) and 20 of the battery and generatorcircuitfv'the conductor 1? being here shown as connected to theconductor 20 between one side ot'the battery and the series winding. Thebattery and dynamo electric machine connections are controlled by aswitch 21 which is arranged between the series windin;` and thearmature. rflhis switch, when opened, opens the armature and batterycircuit and disconnects or opens the shunt field winding, and whenclosed connects in the shunt lield winding` as well as establishesconnection between the armaturc and battery.

To accomplish the objects above stated, and speeilically to cut out theshunt licld winding in case the battery and generator circuit isaecidentally opened by a brealtage o'l' a connection or ot' a.conductor, the shunt field \\'inding is provided in its circuit with anautomatic, cutout which opens the shunt field circuit when the machineis operated or driven with the eircuit between the battery and generatoropen at any point outside ot the shunt field circuit. lh'ef'erably, thecutout is in the. 'torm ot a t'use. l prefer to arrange the Vtuse orffuses so that the blowing of a tuse will simultaneously open the lampcircuit. l lhereiiore provide in eonductors 17 and 18, lfuses Z:) and23, and l connect one terminal ot the shunt winding to the conductor 18between the Vf'use and the lamps7 so that the tuse in this conductor lSis uormally in the circuit ot the shunt field windini', as well as thelamp circuit.

ly this ;n'rangeinenl not only is the circuit ot' the shunt. fieldwinding opened, in case a breakage takes place, butl the lamp rircuit isopened, and there is eliminated the liability ot the batteries beingdischarged through the lamp 'ir,'uit, in case the bruilc ordiseoimection oecurs at a point or in a manner such as not to open thelamp circuit. lt the 'tuse or 'ffuses were not arranged so as to openthe lamp circuit, it would be possible that, the operator would not knowthat the generator was out of service an'l that the lamps were beingsupplied with current from the battery instead ol the generator.rhereiiore, by this arrangement ot the tuses, l provide doubleprotection against injury to the shunt field vvindinf;` or damage to thebatteries by beingvl` completely discharged.

lt will be apparent that my invention may be used to advantage in asystem wherei in the dynamo electric machine to be used as a generatoronly, as well as in the system as herein explained, wherein the machineserves both as a starting` motor and as a lighting and battery charginggenerator.

Having thus described my invention, what l claim is:

l. in combination with a primo mover, a dynan'io electric machinehavii'ig a shnnt .field winding and adapted to be driven by the primomover, a battery, a switch for conneeting` the battery' and dynamo elvctric machine into circuit, and means tor opening` the shunt fieldeircuit when the machine is driven with the circuit between theI batteryand dynamo electric machine open at any point outside the shunt fieldCircuit.

2. In combination with a prin'ie niover, a dynamo electric machinehaving,` i shunt field winding` and adapted to be driven by the primemover, a battery, a switch :tor cormectine` the battery and dynamoelectric machine into cireuit, and means tor automatically disconnectingthe shunt field winding when the machine is driven with the cireuitbetween the battery and dynaino electric machine open at any pointoutside the shunt field circuit.

3. In combination with a primo n'iover', a dynamo electric machinehaving a shunt field Winning and adapted to be driven by the primemover, a battery, switching means t'or closing and openin` the eircuitbetween the dynamo electric machine and the battery and for connectingand disconnecting the snunt field winding, and means for automaticallyopening the shunt field circnit, when the dynaino electric machine isbeing driven by the prime mover, it said circuit between the dynamoelectric machine and battery is open at any point outside the shuntfield eircuit.

l. lu con'ibination with a prime inover, a dynamo electric machinehaving a. shunt field winding and adapted to be driven by the priinemover, a battery, a switch for connecting` into circuit the battery anddynamo electric machine. a lightino'` ci,;uit connected to the batteryand dynamo electric machine cireuit, and means for automatically openingthe shunt field circuit and the lighting circuit when the machine isdriven with th'e Circuit of the battery and dynamo electric machine openat any point outside 'the shunt .field circuit.

5. In combination with a prime mover,

a, clynamo electric machine adapted to drive-.n by the prima mover andprovnied 'With a shunt fieid Winding, imt'ery :i

switch for connactng :md discom'iecting 'aha battery and dynam electricmahine, and means for rendering the, shunt Wining inefectve foreXcitat-on purposes Whenvthe machine is di'iven by the prima movav Wih

